What is FaceTime and how do you use it on your mobile device or computer?

• FaceTime is a popular video-calling app used by millions of Apple users since 2010.
• FaceTime is free, and you can make calls using Wi-Fi or cellular data.
• Only Apple users can download the FaceTime app, but Android and Windows users can join calls.

FaceTime is Apple's platform for video and audio calls. 

The iconic app that made mobile video-calling ubiquitous was first launched in 2010, and has since allowed millions of Apple users to spend time face-to-face with their loved ones, even while apart.